<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<div id="father">
    <h1>标题一</h1>
    <p id="p1">p1</p>
    <p class="p2">p1</p>
</div>


<script>
    var self = document.getElementById('p1');
    var father = p1.parentElement;
    father.removeChild(self)

    //删除是一个动态的过程
    father.removeChild(father.children[0])
    father.removeChild(father.children[1])
    father.removeChild(father.children[2])

</script>

</body>
</html>